Aeroplane



May l5, 1923.

.1. cHocHL ET Al.

AERQPLANE 2 Sheets-Sheet 2 Original Filed Aug. 4, 1921 Patented May 15,1923.

JOSEPH CHOCHOL AND MICHAEL DYKAS, OF CHICAGO, ILLINOIS.

morrama Application led August 4, 1921, Serial No. 489,758. B'enewedJanuary 31, 1923.

To all whom it may concern:

Be it known that we, (1) JOSEPH CHocHoL and (2) MICHAEL DYKAs, citizensof the United States of America, residing at Chicavo, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Aeroplanes, of which the following is a specification.

This invention relates to certain new and useful improvements inaeroplanes and has particular reference to the provision of an improvedbi lane with a novel arrangement and. means or driving helicopter orlift-ing propellers and forward propulsion propellers by means of asingle engine located in the forward part of the fuselage or body.

The primary ob'ect of the invention is to utilize in a simpli ed andimproved manner a single engine for driving a forward screw pro ellerfor imparting forward movement to t e aeroplane and one or morehorizontally disposed helicopter or lifting propel- 1ers for assistingin ascension.

With the above general objects in view and others that will appear asthe nature of the invention is better understood, the same consists ofthe novel form, combination and arran ement of parts hereinafter morefully descri ed, shown in the accompanying drawings and claimed.

n the drawings, wherein like reference characters designatecorresponding parts throughout the several views,

Figure 1 is a top lan view of a biplane constructed in accor ance withthe present invention partly broken away,

Figu of a modified form of the invention,

Figure 3 is a front elevational view of the device shown in Fig. 1,

Fi re 4 is a fragmentar tiona view taken upon horizontal secine IV-IV ofFlg; 3,

igure 5 is a view partly in vertical section and partly in frontelevation of the device shown in Fig. 2, and

Figure 6 is a vertical sectional view taken VI-VI of Fig. 5.

Referring more in detail to the several views, the present invention isparticularly adapted to provide forward propulsion and liftin propellermechanism for biplanes embodying a body or fuselage 5, 'a rotary guidingmeans and tail or empennage 6 and forward superposed planes 9 and 10which re 2 is a fragmentary top plan viewproject beyond opposite sidesof the fusea e 5 at the forward end of the latter and w 10hare suitablyinterbraced as at 11. The biplane is also provided with a suitableunderstructure 12 supporting a transverse axle 13 upon which are mountedlanding wheels 14 in the usual way.

The. present invention contemplates the rovision of a suitable motor 15within the orward end of' the fuselage 5 and having a forwardlypro]ecting shaft portion 16 on which is mounted a forward screwpropeller 17 adapted to cause forward traveling movement of theaeroplane, said motor 15 also being provided with a rearwardly extendingshaft portion 18 with a bevel gear 19 secured thereon and operativelygeared to one or more vertical shafts 2O having horizontally disposedlifting propellers 21 fixed upon the u per ends thereof.

In the orm ofthe invention shown in Figs. '1, 3 and 4, a shaft 22 isjournaled in a horlzontal position at each side of the fuselage 5between the planes 9 and 10 with its inner end portion journaled in theside of the body and having a bevel gear 23 loosely mounted upon thesame in mesh with the bevel gear 19. Each bevel gear 23 is associatedwith a clutch element 24 operable by a hand lever 25 for connecting ordisconnecting the same from its shaft 22, and a bevel ear-26 is fixedupon the outer end of each s aft 22 in mesh with a further bevel gear 27fixed upon a vertical shaft 20 suitably journaled in bearings 29 carriedb the planes 9 and 10 near their outer ends. llach shaft 2()l projectsupwardly through the upper plane 10 and has a lifting propeller 21 xedthereon.

In the operation of the invention, the

ower from the engine shaft is transmitted to the propeller 17 forcausing forward movement of the aeroplane and should the operator desireto ascend, such ascension may be expedited by engaging the clutchelements 24 with the bevel gears 23 so as to cause the shafts 22 to bedriven, thus causing rotation of shafts 20 and lifting propellers 21.Vhen the desired height has been reached, the clutch elements 24 may bedisengaged and the course of the aeroplane controlled in the usual way.The lifting propellers 21 will be found exceedingly useful in obtaininga more direct ascension with a limited amount of forward travel glecontrollmtg p oregoing description it is be will offer a resistance tothe aeroplane when' descending. l n

vInthe form of the inventionl shown 1n Figs. 2, 5 and` 6, the'en ine 15has its rearwardly projecting shat portlon wlth the 'bevel gear 19fastened thereon 1n mesh with a bevel gear 30 which is fixed-upon thelower end of `a central vertical shaft 3 1, such shaft 31 bein dis osedmidway between the ends of t e p anes 9 and 10 instead of adjacent theends of sald plane, and only a single lifting propeller 21 beingemployed, which propeller is fixed upon the upper end of the shaft 31above the upper plane 10. Suitable bearings for the vertlca-l shaft 31are provided as at 32 in the plane and fuselage 5 and a clutch element33 is ywrovided upon the shaft 31 so as to engage or disengage the bevelgear from the shaft 31, such clutch element 33 being actuated by thehand lever 34. The operation' of the form of the invention shown inFigs. 2, 5 and 6 is substantially the same as that described inconnection with the other form except that only a single liftingpropeller is provided and a sinlever necessary.

From the lieved that the construction vand; operation as well as theadvantages of the present invention will be readil understood andappreciated by those ski led in the art:

Minor changes may be made in the invennatures.

' nausea? 'tion without departing from the.' lspirit and thereofasicl'aimecl am at 1s claimed as new is:` 'ln combination with 'afuselage having superposed planes atthe forward end there of andextending from opposite sides ofthe same, an engine inthe forward end ofsaid fusela e having rearwardly and forwardly exten ing shaft portions,a screw propeller for causin forward movement of the aeroplane fixe uponthe forwardly projecting ortion of the engine shaft, a bevel gear xedupon the rearwardly extending rtion of the yengine shaft, a transverse saft arranged in a horizontal position at each side of the fuselage andterminating adjacent the outer ends of the planes between.

the latter, bevel gears sl-idably keyed upon the inner ends of said lastnamed shafts adapted to mesh with the first named bevel gear, manuallyoperable means to connect or disconnect either one or both of the lastnamed bevel ears from said first named bevel gear lan including a pairof horizonv tal rearwardly extending levers arranged' within thefuselage rearwardly of the engine, vertical shafts journaled near theouter ends of the planes and rotatably geared to the 1 ufter ends olsaicli least named shafts, and i ting prope ers xe upon the upper endsof the vertical shafts above said plane. -ln testimony whereof we aixour sig- JOSEPH CHoeHo-L. MICHAEL lurnas.

